Support OSR in for-in loops.

src/runtime-profiler.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 83 matching lines @@
   static bool WaitForSomeIsolateToEnterJS();
 
   // Stops the runtime profiler thread when profiling support is being
   // turned off.
   static void StopRuntimeProfilerThreadBeforeShutdown(Thread* thread);
 
   void UpdateSamplesAfterScavenge();
   void RemoveDeadSamples();
   void UpdateSamplesAfterCompact(ObjectVisitor* visitor);
 
+  void AttemptOnStackReplacement(JSFunction* function);
+
  private:
   static const int kSamplerWindowSize = 16;
 
   static void HandleWakeUp(Isolate* isolate);
 
   void Optimize(JSFunction* function, const char* reason);
 
-  void AttemptOnStackReplacement(JSFunction* function);
-
   void ClearSampleBuffer();
 
   void ClearSampleBufferNewSpaceEntries();
 
   int LookupSample(JSFunction* function);
 
   void AddSample(JSFunction* function, int weight);
 
   Isolate* isolate_;
 
@@ skipping 56 matching lines @@
 
 void RuntimeProfiler::IsolateExitedJS(Isolate* isolate) {
   Atomic32 new_state = NoBarrier_AtomicIncrement(&state_, -1);
   ASSERT(new_state >= 0);
   USE(new_state);
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_RUNTIME_PROFILER_H_